Mycomicrothelia minutissima (C.Knight) D.Hawksw.
Details
Mycomicrothelia minutissima (C.Knight) D.Hawksw. in Galloway, New Zealand J. Bot. 21: 195 (1983)
Mycomicrothelia minutissima (C.Knight) D.Hawksw.
Biostatus
Nomenclature
(C.Knight) D.Hawksw.
C.Knight
D.Hawksw.
1983
195
ICN
species
Mycomicrothelia minutissima
Classification
Synonyms
Descriptions
Mycomicrothelia minutissima (C.Knight) D.Hawksw.
Thallus dark grey-brown, very thin, plicate-rugose to ± irregularly cracked, forming dark, irregular patches, 3-5 cm diam., on bark. Ascomata arising singly but commonly 2-3-confluent, scattered, immersed, the upper layers of bark raised to form low hemispherical projections, individual ascomata dimidiate, 200-300 µm diam., to 150 µm tall, black basal fringe usually poorly delimited but extending to c. 125 µm in some fruits, ostiole depressed, centrum visible as a white spot, gaping, 40-50 µm diam., involucrellum dark reddish-brown, unchanged in K, 20-30 µm thick, consisting of host cells intermixed with fungal hyphae. Pseudoparaphyses cellular, abundant, persistent, filiform, branched and anastomosing, septate, 1.5-2 µm thick. Asci arising from base of ascomatal cavity, oriented towards ostiole, elongate-clavate to subcylindrical, short-stalked, with a distinct, internal apical beak when young, 65-75 × 12-14 µm, 8-spored. Ascospores biseriate, ellipsoid to soleiform, 1-septate, slightly constricted at septum, lower cell somewhat shorter and narrower, apex rounded, base rounded to subattenuate, pale olivaceous-brown, verruculose without a distinct gelatinous sheath, 17-22(-24) × 5.5-7.5 µm.
Taxonomic concepts
Microthelia knightiana Müll.Arg.
Mycomicrothelia minutissima (C.Knight) D.Hawksw.
Microthelia minutissima (C.Knight) Zahlbr.
Mycomicrothelia minutissima (C.Knight) D.Hawksw.
Mycomicrothelia minutissima (C.Knight) D.Hawksw.
Mycomicrothelia minutissima (C.Knight) D.Hawksw.
Mycomicrothelia minutissima (C.Knight) D.Hawksw.
Mycomicrothelia minutissima (C.Knight) D.Hawksw.
Mycomicrothelia minutissima (C.Knight) D.Hawksw.
Metadata
81a069c3-9964-4f26-a555-2d2c165de139
scientific name
Names_Plants
1 January 2000
4 November 2010